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Mean Well LCM-25DA2 Power Supply 25W 350mA 500mA 600mA 700mA(default) 900mA 1050mA - DALI2 and Push

selectable output current using dip switchflicker-freeClass II without FGDALI2

SKU LCM-25DA2

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Overview

LCM-25DA2 is the model of this series: rated power 18.9W (350mA); 25.2W (500mA ~ 1050mA), typical efficiency 86%. Type DA2: Built-in DALI-2 interface and push dimming.

LCM-25DA series is a 25W AC/DC constant current mode output LED driver featuring the multiple levels selectable by dip switch and the DALI interface with the compliance to IEC62386. LCM-25DA operates from 180～277VAC and offers different current levels ranging between 350mA and 1050mA. Thanks to the efficiency up to 86%, with the fanless design, the entire series is able to operate for -30℃~+85℃ case temperature under free air convection. In addition, LCM-25DA is equipped with push dimming and synchronization functions, so as to provide the optimal design flexibility for LED lighting system.

Features

Constant current mode output with multiple levels selectable by dip switch
Emergency lighting application is available according to IEC61347-2-13
Built-in active PFC function and class II design
Standby power consumption <0.5W
Functions: DALI interface(logarithm or linear dimming curve selectable), push dimming synchronization up to 10units
3 years warranty

Specifications

LCM-25DA2Specifications from the official datasheet (2026-02-09 edition)

OUTPUT

CURRENT LEVEL: Current level selectable via DIP switch, please refer to "DIP SWITCH TABLE" section: 350mA / 500mA / 600mA / 700mA(default) / 900mA / 1050mA
RATED POWER: 18.9W (350mA); 25.2W (500mA ~ 1050mA)
DC VOLTAGE RANGE: 6 ~ 54V (350mA); 6 ~ 50V (500mA); 6 ~ 42V (600mA); 6 ~ 36V (700mA); 6 ~ 28V (900mA); 6 ~ 24V (1050mA)
OPEN CIRCUIT VOLTAGE (max.): 59V (350mA ~ 600mA); 41V (700mA ~ 1050mA)
CURRENT RIPPLE: 5.0% max. @rated current
CURRENT TOLERANCE: ±5%
SETUP TIME^{Note.3 Note.8}: 500ms / 230VAC

INPUT

VOLTAGE RANGE^Note.2: 180 ~ 277VAC 254 ~ 380VDC(254~375VDC for DA2-Type) (Please refer to "STATIC CHARACTERISTIC" section)
FREQUENCY RANGE: 47 ~ 63Hz
POWER FACTOR (Typ.): PF≧0.94/230VAC, PF≧0.91/277VAC@ full load (Please refer to "POWER FACTOR (PF) CHARACTERISTIC" section)
TOTAL HARMONIC DISTORTION: THD< 20%( @load≧50%/230VAC; @load≧75%/277VAC ) (Please refer to “TOTAL HARMONIC DISTORTION(THD)” section)
EFFICIENCY (Typ.)^Note.4: 86%
AC CURRENT (Typ.): 0.17A/230VAC / 0.15A/277VAC
INRUSH CURRENT (Typ.): COLD START 20A(twidth=260μs measured at 50% Ipeak) at 230VAC; Per NEMA 410
MAX. No. of PSUs on 16A CIRCUIT BREAKER: 26 units (circuit breaker of type B) / 44 units (circuit breaker of type C) at 230VAC
LEAKAGE CURRENT: <0.5mA / 240VAC
STANDBY POWER CONSUMPTION^Note.5: <0.5W

PROTECTION

SHORT CIRCUIT: Constant current limiting, recovers automatically after fault condition is removed
OVER TEMPERATURE: Shut down o/p voltage, recovers automatically after temperature goes down

FUNCTION

DIMMING: Please refer to "DIMMING OPERATION" section
SYNCHRONIZATION: Please refer to "SYNCHRONIZATION OPERATION” section

ENVIRONMENT

WORKING TEMP.: Tcase=-30 ~ +85℃ (Please refer to “ OUTPUT LOAD vs TEMPERATURE” section)
MAX. CASE TEMP.: Tcase=+85℃
WORKING HUMIDITY: 20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -40 ~ +80℃, 10 ~ 95% RH
TEMP. COEFFICIENT: ±0.03%/℃ (0 ~ 50℃)
VIBRATION: 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes

SAFETY & EMC

SAFETY STANDARDS: UL8750(except for DA2-Type), CSA C22.2 NO.250.0-08, ENEC BS EN/EN61347-1, BS EN/EN61347-2-13, BS EN/EN62384 independent,GB/T19510.1,GB/T19510.213,BIS IS15885(except for DA2-Type), EAC TP TC 004 approved; According to BS EN/EN61347-2-13 appendix J suitable for emergency installations(EL)(AC Input: 200-240Vac)(for DA2-Type only)
DALI STANDARDS: IEC62386-101, 102, 207,251
WITHSTAND VOLTAGE: I/P-O/P:3.75KVAC ; I/P-DA:1.5KVAC ; O/P-DA:1.5KVAC
ISOLATION RESISTANCE: I/P-O/P:>100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION^Note.6: Compliance to BS EN/EN55015, BS EN/EN61000-3-2 Class C(@load≧50%) ; BS EN/EN61000-3-3; GB/T 17743, GB17625.1, EAC TP TC 020
EMC IMMUNITY: Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11, BS EN/EN61547, light industry level(surge immunity Line-Line 2KV), EAC TP TC 020

OTHERS

MTBF: 2661.8K hrs min. Telcordia SR-332 (Bellcore) ; 213.3K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 105*68*23mm (L*W*H)
PACKING: 0.17Kg ; 72pcs/13.2Kg/1.04CUFT

MODEL ENCODING

DA: Built-in DALI interface and push dimming
DA2 (this model): Built-in DALI-2 interface and push dimming

Test conditions and notes9

1. All parameters NOT specially mentioned are measured at 230VAC input, rated current and 25℃ of ambient temperature.
2. De-rating may be needed under low input voltages. Please refer to “STATIC CHARACTERISTIC” sections for details.
3. Length of set up time is measured at first cold start. Turning ON/OFF the driver may lead to increase of the set up time.
4. Efficiency is measured at 500mA/50V output set by DIP switch.
5. Standby power consumption is measured at 230VAC.
6. The driver is considered as a component that will be operated in combination with final equipment. Since EMC performance will be affected by the complete installation, the final equipment manufacturers must re-qualify EMC Directive on the complete installation again. (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf)
7. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).
8. Based on IEC 62386-101/102 DALI power on timing and interruption regulations, the set up time needs to test with a DALI controller which can support for DALI power on function, otherwise the set up time will be higher than 0.5 second for DA2-type.
9. To fulfill requirements of the latest ErP regulation for lighting fixtures, this LED power supply can only be used behind a switch without permanently connected to the mains.

Technical drawings

LCM-25DA2 DIP SWITCH TABLE — DIP SWITCH TABLE

LCM-25DA2 LCM-25DA series — LCM-25DA series

LCM-25DA2 OUTPUT LOAD vs TEMPERATURE — OUTPUT LOAD vs TEMPERATURE

LCM-25DA2 TOTAL HARMONIC DISTORTION — TOTAL HARMONIC DISTORTION

LCM-25DA2 POWER FACTOR (PF) CHARACTERISTIC — POWER FACTOR (PF) CHARACTERISTIC

LCM-25DA2 EFFICIENCY vs LOAD — EFFICIENCY vs LOAD

LCM-25DA2 MECHANICAL SPECIFICATION — MECHANICAL SPECIFICATION

Typical applications

LED indoor lighting
LED office lighting
LED commercial lighting
LED panel lighting
Industrial lighting

Downloads

Datasheet1

LCM-25DA2 datasheetLCM-25DA-SPEC.PDF · 2026-02-09 edition PDF Download

Certificates4

UL Certificate(LCM-25DA)(EN) PDF Download

CB Certificate(LCM-25DA)(EN) PDF Download

ENEC Certificate(LCM-25DA)(EN) PDF Download

EMC Certificate(LCM-25DA)(EN) PDF Download

Test reports1

Test Report (LCM-25DA)(EN) PDF Download

FAQ

Can I use the LCM-25DA2 for indoor LED downlights?

Yes, it is a constant current LED driver rated at 25.2W (18.9W at the 350mA setting) with DIP-switch selectable output from 350mA to 1050mA, making it relevant for LED downlights designed around a constant current input, with DALI and push dimming.

Is the LCM-25DA2 suitable for indoor signage LED modules?

It is suited to signage applications where the LED modules require constant current operation. Because it is not a constant voltage supply, module compatibility depends on the driver's constant current output (350mA to 1050mA selectable via DIP switch) and the voltage range of the selected current rather than a fixed DC voltage output.

Can the LCM-25DA2 be used with a small indoor LED array?

Yes, it is aimed at constant current LED loads and is rated at 25.2W (18.9W at 350mA). For a small LED array, the load still needs to be matched to the driver's constant current characteristics instead of treating it as a constant voltage power supply.

How should I check LED compatibility for the LCM-25DA2?

Use the listed constant current output information and verify that the LED load is designed for constant current operation. The output voltage range depends on the DIP-switch current: 6-54V at 350mA, 6-36V at the 700mA default and 6-24V at 1050mA, and the number of LEDs depends on each LED's forward voltage rather than on a fixed LED count.

Is the LCM-25DA2 for outdoor environments?

The spec sheet does not list an IP rating or outdoor suitability. It is a component meant to be built into final equipment, specified for a case temperature (Tcase) of -30°C to +85°C and 20-90% RH non-condensing.

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